For a brief spell during the mid-'80s, the heavy metal quintet Dio was one of the top U.S. concert attractions, boasting one of the most over-the-top stage acts of its time loaded with props and special effects (lasers, explosions, a giant dragon, etc.). The group's leader was singer Ronnie James Dio, who had previously become acquainted with the metal masses as the frontman of Ritchie Blackmore's Rainbow from 1975-1978 and Black Sabbath from 1979-1982. Come the early '80s, Ronnie James was ready to finally head out on his own, forming Dio and recruiting a stellar backing band, consisting of a few former bandmembers, ex-Rainbow bassist Jimmy Bain and ex-Black Sabbath drummer Vinny Appice (Carmine Appice's brother), in addition to ex-Sweet Savage guitar shredder Vivian Campbell
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